CN102308048B

CN102308048B - Device for collection of debris

Info

Publication number: CN102308048B
Application number: CN2009801563364A
Authority: CN
Inventors: W·B·托泽
Original assignee: Aero Tech Pty Ltd
Current assignee: Aero Tech Pty Ltd
Priority date: 2009-02-09
Filing date: 2009-02-09
Publication date: 2013-12-25
Anticipated expiration: 2029-02-09
Also published as: AU2009339264A1; EP2393987B1; WO2010088715A1; CN102308048A; EP2393987A4; US8839878B2; EP2393987A1; AU2009339264B2; US20120047666A1

Abstract

A device (10) for collecting debris from a ground surface (18). A flexible generally planar member (17) has openings (16) therethrough. When the device is laid on and forwardly moved over the ground surface (18) debris on the ground surface passes upwardly through the openings, over inclined pick-up portions (42) of the device and thence onto collection surfaces (25) of the device. The device has transversely extending openings (88) spaced in the lengthwise direction on inclined surfaces (68) of the pick-up portions (42) whereby under forward movement of the device (10) in use, debris is accumulated in the recesses (88). Debris accumulated in the recesses (88) tends to be retained therein during deceleration of the device (10).

Description

Equipment for garbage collection

Technical field

The present invention relates to a kind of equipment for garbage collection.

Background technology

U.S. Patent No. 5,284,211 and international patent application NO.WO/1996/009440 the garbage collection equipment that for example is suitable for collecting from ground fractionlet is disclosed.These equipment all are and have the cushion structure that runs through opening.The cushion structure keeps flat on the ground and moved ground, so fragment is upward through the upper surface that opening stays in structure from ground.Then equipment be movable to applicable ，Gai position, position, such as by toppling over this equipment, collected fragment on the structure upper surface being removed.For example, U.S. Patent No. 5,284,211 equipment has been found that and can be used for from remove leaf such as tennis court, and be generally finishing, and the layout of WO/1996/009440 can be used for multiple occasion, comprise from runway and remove fragment, such as bolt, screw, nut collar and other foreign matter fragments, so-called " FOD ".

Such as U.S. Patent No. 5,284,211 and international patent application NO.WO/1996/009440 shown in layout have been found that in use very satisfactoryly, give and for example to be used the mechanical cleaning equipment of rotating brush that relatively cheap replacement scheme is provided.Yet, having been noted that sometimes, on the cushion structure, collected material has the tendency of falling back wherein and losing again by opening.This tendency occurs under especially slowing down suddenly when equipment moving is crossed ground.The collection efficiency loss caused thus can be by guarantee that this deceleration is relatively slightly limited always, if but it will be favourable there is no this operation constraint.

International patent application No.PCT/AU2008/001252 has described a kind of for collect the equipment of fragment from ground, it comprises having the roughly flat-shaped flexible member that runs through opening so that ground fragment is upward through opening to the collection surface of equipment when equipment lies against on ground and moved forward ground thereon, this equipment has the baffle plate of horizontal expansion, it is located so that in use to be upward through the fragment of opening upwards through baffle plate and then down to collecting surface, in the situation that equipment slows down while moving forward on ground, baffle plate hinders at least in part the lip-deep collected fragment of collection and is back into opening.

This has been found that significantly is convenient to keep between deceleration period as mentioned above fragment, but still being desirably in this respect has larger efficiency.

Summary of the invention

According to an aspect of the present invention, provide a kind of for collect the equipment of fragment from ground, it comprises roughly flat-shaped flexible member, this flexible member has the opening that runs through so that when equipment is positioned on ground and move forward on the ground, ground fragment is upward through the collection surface of opening access arrangement, this equipment has from transverse edge upwards and extend and form backward the inclined surface of the trailing edge of opening, and there is the depression of horizontal expansion so that be upward through opening to collecting surperficial at least part of fragment by moving to depression, be trapped in depression and therefore from depression, move to the collection surface and advance at described inclined surface.

The accompanying drawing explanation

Only in the mode of example, further describe the present invention with reference to accompanying drawing, wherein:

Fig. 1 is the phantom drawing according to the garbage collection equipment of the instruction structure of international patent application No.PCT/AU2008/001252;

Fig. 2 is the vertical local vertical cross-section of the equipment of Fig. 1;

Fig. 3 is the partial plan layout of the equipment of Fig. 1;

Fig. 4 is the phantom drawing of the part of the equipment of Fig. 1 in the zone of Fig. 3 " A ";

Fig. 5 is the vertical amplification vertical cross-section in the zone " B " in Fig. 3;

Fig. 6 is and the similar cross section of Fig. 5, but illustrates according to further modification of the present invention; And

Fig. 7 is the partial cross-section of the equipment of Fig. 1 to 5, and another modification is shown.

The specific embodiment

The form of the garbage collection equipment 10 shown in Fig. 1 to 6 roughly is similar to the garbage collection equipment of describing in international patent application No.PCT/AU2008/001252, and this disclosed content is incorporated into this to form the disclosed part of the application.Equipment 10 forms roughly flat-shaped flexible member 17, and it has the section 50 formed by submissive cushion material 15, and cushion material 15 has the flexible layer base portion 12 of being with the bristle 14 that dangles as shown in Figure 2.Be furnished with three sections 50 in the position vertically separated separated by two transverse frame structures 30.Have been found that to form this equipment be easily by being inverted artificial grass material, this artificial grass material, for the surface in tennis court etc., is furnished with the bristle to downward-extension.

Equipment 10 has the rectangular aperture 16 of laterally-elongated, and each frame construction 30 limits a row of openings of corresponding horizontal expansion.When equipment 10 moves on ground 18 (Fig. 2), such as by using the rope 22 at its front end to pull, bristle 14 is by contacting to stir ground leaf, stone etc. and these fragments tend to collect surface 25 with the top that rests on section 50 through opening 16 from the downside of equipment 10 with ground.Therefore then the fragment rested on the upside of equipment 10 can be taken away easily on equipment, for such disposal the according to expectation.

In the illustrated embodiment, six openings 16 are formed in each frame construction 30.Opening in a row 16 in each frame construction 30 on fore-and-aft direction, insert respectively section 50 between previous and middle one and one of the centre of section 50 with backward between one.

Forward frame structure 30 at its horizontal leading edge portion 32 places, be fastened to section 50 to previous transverse rear edge part, and be fastened to the leading edge portion of of the interfix of section 50 at its rear edge part 34 places.Rear frame structure 30 is laterally leading edge portion 32 and rear edge part 34 places are fastened to respectively the transverse rear edge part of the section 50 of interfix and the horizontal leading edge portion of back section 50.

Frame construction 30 for example can extend through the

marginal portion

32,34 of frame construction 30 and bolt or other retaining element 40 (Fig. 3) of cushion material 15 is fastened to section 50 by use.Alternatively, section for example can be seamed to

marginal portion

32,34.

Marginal portion

32,34 forms front transverse element 62 and the corresponding part of extending forward of rear transverse element 64 and the part extended back of respective frame structure 30, and is roughly coplanar.

Marginal portion

32,34 is superimposed upon the corresponding adjacent upper edge portion that they are anchored on this section 50.

Opening 16 in each framework is defined between the

wing wall

36,38 extended from front to back of the front transverse element 62 of framework and rear transverse element 64 and each

frame construction.Wall

36,38 extends and is connected to each other between lateral direction element 62,64.Shown in equipment 10 in, each frame construction 30 has each side edge that 36, one outer walls of four walls are positioned at respective frame structure 30, and two inwalls are positioned from the position of corresponding inside 1/3rd distances of outer wall 36.Each frame construction has three walls 38, and each medially is positioned between paired wall 36.Wall the 36, the 38th, roughly flat-shaped and extend vertically, and there is the thickness of less at equipment 10 to the direction of another side from a side side.

Wall

36,38 has lower edge part 45, and in the use location of equipment 10, this lower edge partly is parallel to ground 18 and rests on ground 18 or just in time above ground 18.Wall 38 is compared the height with less with wall 36, but form and wall 36 are similar.

Each front transverse element 62 has upstanding wall 54.Wall 54 have from the upwardly extending roughly upstanding portion of the trailing edge of part 32 54a with and the part 54b that extends forward from the upper end of part 54a.In the end the upper back edge place of section 50 provides the element 57 extended laterally, it has the flat-shaped part 55 of horizontal expansion of the rear portion lateral margin that is fastened to section 50 and has the upstanding wall 56 that is similar to wall 54 at its trailing edge place, and upstanding wall 56 has from the upwardly extending upstanding portion 56a of the trailing edge of part 32 and the part 56b that extends forward from the upper end of part 56a.

Wall

54,56 forms baffle plate, and the fragment that is used for suppressing to collect between the operating period of equipment 10 breaks away from the motion backward of pad section 50, in order to reduce from the collection material of equipment loss.Namely, when the fragment of collecting is gathered on surface 25, these fragments are because moving forward continuously of equipment 10 tended to move backward, and the fragment that

wall

54,56 restrictions are collected moves to turn back to collects surperficial trailing edge top.

The trailing edge of the opening 16 of each frame construction 30 is limited by the part that is formed at lateral inclination on corresponding rear transverse element 64 and picks up the leading edge 70 of part 42.Each pick up part 42 have with respect to ground 18 acutangulate from respective edges 70 forward and the front surface 68 that extends back.Pick up part engaging to forward part in the part 34 of place, upper rear portion and respective transversal element 64.

Each picks up the array that the front surface 68 of part 42 has the depression 88 extended laterally.These are recessed on the fore-and-aft direction of equipment 10 surfacewise 68 and separate.Each depression have forward extend laterally surface 78 and adjacency extend laterally backward surperficial 68a, this forward extend laterally the surface downward-sloping from its leading edge, adjacency extend laterally backward surperficial 68a from being inclined upwardly with the corresponding junction surface that extends laterally to front surface 68a.Each depression 88 surperficial 68a, 78a a kind of is by backward corresponding on the upright transverse wall 66 on surface 68 and form to front surface.

The depression laterally extended laterally 88 in addition is formed on the upper surface of each rear edge part 34 of respective frame structure 30.These depressions are arranged in the corresponding position separated on the fore-and-aft direction of garbage collection equipment equally.Other depression 88 on rear edge part 34 from rear edge part one side direction opposite side ground, extend and its form roughly the same with the form of picking up the depression part 42, have from its leading edge downward-sloping extend laterally forward surface 78 and from corresponding front surface 68a extend laterally the acclivitous adjacency in junction surface extend laterally backward surperficial 68a.Corresponding rear surface and front surface on other upright transverse wall 66 on 68 forms by surface for a kind of in the surperficial 68a, 78 of each other depression 88.

At wall 66 places, corresponding surperficial 68a and 78 can meet at 73 places, summit of wall.Surface 78 can become at fragment equipment the angle of about 90 ° from respective vertices 73 to downward-extension with vertical line under the state in using.Alternatively, they can extend downwards and forward, or, as shown in the figure, extend back downwards and to a certain extent.In the latter case, they can preferably acutangulate the inclination of ground, ground with respect to vertical line.

As described in PCT/AU2008/001252, pick up upper wall 66 on part and be used for suppressing between deceleration period to collect the move forward opening 16 that be back into tight front of fragment 80 from middle and rear portion pad section 50 when equipment 10 is used.Especially, when slowing down, during equipment 10 moves forward, collect that the direction " C " of fragment 80 in Fig. 5 is upper to be hindered on the upright wall surface 78 due to fragment 80 heaps lean against upper wall 66 along moving forward at least partly of collecting that surface 25 produces.On the other hand, the fragment 80 that the angled front 68a of upper wall 66 is convenient to be picked up by equipment upwards and backward flows along picking up part 42, thereby with in the middle of upwards falling and be collected in through the summit 73 of upper wall 66 backward and on the collection surface 25 of back pad section 50.Fragment illustrates with path " D " in Fig. 5 along the movement on the surface 68 of picking up part 42 and adjacent upper wall 66.Thus, upper wall 66 forms corresponding baffle plate 67 and collects moving forward of fragment to stop, and allows to flow to backward to collect surface simultaneously.

In equipment of the present invention, each wall 66 is formed on equipment helps keep to collect fragment baffle plate 67 between 10 deceleration periods, as described in.By providing depression 88 and provide a plurality of walls 66 to be convenient to this effect picking up on part 42.Wall 66 each formation additional stops 67, it forms to allow to flow backward but suppress and refluxes.Yet additionally, between the normal operating period of equipment 10, at least part of fragment that is upward through opening 16 along inclined surface 68 advances under at least instantaneous confining force effect in higher and depression 88 position more backward in succession.So, under slowing down, the material so kept is held in depression 88, but not relatively move forward, break away from surface 68.In the described layout of PCT/AU2008/001252, for example, the fragment of small scale can remain in to pick up on part 42 not reach collects surface 25.If the operator is slowed down, for example, to stop and emptying collection fragment, fragment can fall the loop face.This just requires the operator to spiral to lay equal stress on to sweep this zone of road.Utilize the layout of Fig. 1 to 5, fragment is held in depression 88 in the normal operation period, thereby can avoid the needs of heavily sweeping.

On rear edge part 34, providing a plurality of depressions 88 also to have been found that is held in fragment and collects on surface 25 in help between the deceleration period of garbage collection equipment.By to about picking up described those the similar effects of depression on part 42, move to backward at least a portion fragment of collecting surface 25 from opening 16 and 88 move to backward the depression 88 that is positioned at the marginal portion to forward part 34 of collecting surface from caving in, so fragment is held in wherein between deceleration period.The other wall 66 of each on rear edge part 34 forms other baffle plate 67, and it forms to allow to flow backward but suppress and refluxes.

Have been found that vibration contributes to rest in the collection of the fragment in the depression of picking up on part 42.When equipment 10 is advanced on the ground, when advancing on airport hardstand or road, vibration produces by the rough surface in track.This vibration rests in depression any fragment by excitation and makes it to be back to and collects surface 25 and formed the motive force that contributes to garbage collection.

Once reaching, fragment collects surface 25, the wall 66 of collecting surface together with the natural vibration caused during cleaning by fragment further backward delivery to by collecting the surface 25 main capture regions that form, thereby also contribute to prevent that most collection fragment from moving forward when deceleration.

In Figure 4 and 5, while seeing in cross section from front to back, the front surface of wall 66 and rear surface are linear.Yet they can be also different forms.For example, Fig. 6 shows a kind of modification, and wherein each antetheca 66 picked up on part 66 has spill front surface 68a at the leading edge place of picking up part 42, and last upper wall 66 has spill front surface 68a.Surface can be on vertical direction gradually and increment ground change, from remarkable spill through substantial linear be changed to remarkable convex.Thereby as shown in the figure, the front surface of antetheca 66 has significant concavity, the less concavity that has in the tight back of antetheca, ensuing surperficial 68a is substantial linear, and ensuing surperficial 68a shows convexity to a certain degree, and the last surperficial 68a picked up on part shows remarkable convexity.The front surface 68a of antetheca 66 can meet with the leading edge 70 that pick up part at the place, summit as shown in Figure 6, and the surperficial 68a of this of this wall 66 under the use state of garbage collection equipment 10 only from the horizontal by low-angle, this surperficial 68a then on the backward directions away from edge 70 slope increase.

Each array that picks up the wall 66 on the array of the wall 66 on part 42 and each rear edge part 34 can be linear, and its meaning is that the root of each wall and/or summit aim in corresponding linear array.In the layout of Fig. 5, the array that picks up the summit 13 of the wall 66 on part 42 and root is contained in corresponding linear plane 90,92 and the array of the summit of the wall on rear edge part 34 and root is contained in corresponding linear plane 94,96.In the embodiment of Fig. 6, yet, although the wall 66 on rear edge part 34 is arranged similarly, but the summit of picking up the wall on part is arranged in the array that has respectively bus 98,100, bus is curve form when the side direction from garbage collection equipment is seen, and in its front portion, being spill, is convex at its rear portion.

In explanation in front, spill, concavity, convex and convexity are considered as above garbage collection equipment 10, judging under the use state, unless requirement separately arranged in literary composition.

Although not necessarily, wall 66 can be basically continuous, its meaning is that rear surface (except rear wall 66) all or wall 66 at least mostly meets at the lower edge of the front surface of respective lateral root line place and a rear wall 66, therefore when cross-sectional view from front to back, wall presents basically " sawtooth " form.

When the array of the wall 66 on picking up part 42 is substantial linear as shown in Figures 4 and 5, under the situation that array can be used at equipment 10, with horizontal plane, become about 30 degree ground to extend.Namely, plane 90 and 92 can be extended with such angle.This linear array has been found that be gratifying in general the use, although the non-linear array of Fig. 6 has been found that, contributes in some cases to collect, especially under equipment 10 slow speed operations.

Owing on the upper surface 68 picking up part 42, providing baffle plate 67, upper surface has " sawtooth " structure when cross section.

The equipment of Fig. 1 to 6 have been found that for from crust such as pitch, cement surface etc., and be gratifying especially from meadow and similar surfaces cleaning fragment.Also have been found that for being gratifying when collecting little article such as nut, bolt etc. from runway.Especially for coarse asphalt surface, collecting action is very effective, and bristle 14 is used for clearing up ground, fragment is directed to the upper surface of equipment.

In the said equipment of a kind of form, before and after finding to provide on length size at 60mm magnitude and width the opening 16 in the 260mm magnitude, and the degree of depth of the pile formed by bristle 14 is gratifying in the 1cm magnitude.Yet these sizes can change the present invention to be applicable to concrete purposes as required.For example, the length that opening 16 is measured on the fore-and-aft direction of present device can be in 10 to 300mm magnitudes.Under the hauling speed up to 30Kph, approximately the length of 70mm can be gratifying, larger length for hauling speed faster, for example in speed, adopts the length of 100mm during up to 100Kph.The degree of depth of the pile provided by bristle 14 similarly, can change.Usually, bristle is longer, and abrasion resistance is better, but shorter bristle is normally more effective, because it is easier to object is directed to the upper surface of equipment from ground by shorter distance.In fact, for such as wisps such as packing rings, approximately the pile thickness of 9mm can be gratifying.For large object, can adopt the larger degree of depth.For the wisp of common scope, select the general thickness of cushion material will provide gratifying picking up for 5 to 15mm.

Bristle 14 should be flexible usually, and expectation elasticity to a certain degree.

In representative configuration, cushion material 15 is pedaline materials, and bristle 14 is formed by polypropylene fibre and length is about 10mm.Resulting cushion structure can be flattened by hand pressure is pressed on bristle (can upwards flatten), but has enough elasticity suitably to return to rapidly original condition when pressure removes.This pedaline material relative flexibility, base material is flexible.

Described artificial cushion material presents the bottom surface by bristle configuration, it can the localized variation through Shi Yu ground, ground be consistent at equipment 10, especially can be consistent with surface relief and be adapted to little obstruction, and provide effective cleaning to move to stir fragment and make it to move through opening 16.Although preferably equipment comprises the flexible base with the submissive part that is described bristle form, other structures are also possible.For example, also can use cellular plastic material layer.Usually, whole equipment 10 should be flexible, although, if especially adopt the very thick bottom by bristle, foam or other materials structure, it can be fastened to relatively hard upper lining.The leading edge of equipment can be provided with stiffener so that maintain equipment under deployed condition during traction is through surface.

The structure of wall 66 and highly may be selected to be the fragment to be collected that is suitable for particular types.For general use, can use the height between 5 to 25mm.

Usually, for larger type treat highly can be larger for collection material, and highly can be less for the material of less type.Namely, the material of less type has less momentum forward when collecting, and therefore the momentum forward when equipment slows down can be easier to opposing.And, than heavy material from opening 16 upwards by the time relatively large momentum may make it effectively to be carried backward to cross higher baffle plate 67.

Wall 54 alternately forms simple laterally upright 54c as shown in Figure 7, and wall 56 can form similarly.

As shown in Figure 5, the wall 66 that forms baffle plate 67 at the place, the top of picking up part 42 is bonded to respective edges part 34 at corresponding tooth root chamfering (radiused filet) part 82 places, so the rear surface 78 of wall 66 is converged smoothly with the upper surface of appropriate section 34.Thus, the root of wall 66 has larger width while seeing in the cross section as Fig. 5, and there is no sharp corner between these surfaces.This contributes to reinforce wall 66.And, at equipment 10, being raised so that fragment is shaken out forward from equipment 10, this layout helps prevent in the bight of debris catching between the surface of surface 78 and marginal portion 34.Upper wall 66 in the layout of Fig. 6 can be constructed similarly.Each wall 66 of equipment 10 can be formed with chamfering (filet) part 82.

Usually, the size of opening 16 on the equipment fore-and-aft direction can be equal in length or slightly large with the front and back of section 50.Equipment can be any size easily.For general manual use, the width of the length of 1.5 meters magnitudes and 2.4 meters magnitudes can be gratifying.

Described structure only provides by way of example and a lot of modification can not break away under the spirit and scope of the present invention and make with changing, and it comprises the combination of each features of novelty disclosed herein and these characteristics.

In this manual and claim subsequently, unless content separately has requirement, word " comprises " and changes and will be interpreted as that hint comprises the group of stated integer or step or integer or step, but do not get rid of the group of any other integer or step or integer or step.

Not being for quoting of any existing publication (or stem from this information) or any contents known in this manual and also should not being considered as is to form admitting or approving of a common practise part for described existing publication (or stem from this information) or contents known.

Claims

1. one kind for collecting the equipment of fragment from ground, comprise roughly flat-shaped flexible member, this flexible member has the opening that runs through so that when equipment is positioned on ground and move forward on the ground, ground fragment is upward through the collection surface that described opening arrives equipment, this equipment have from transverse edge upwards and extend backward and form described opening trailing edge inclined surface and there is the depression of horizontal expansion so that be upward through described opening arrive collect surface at least part of fragment by moving to described depression, be trapped in described depression and therefore from described depression, move to the collection surface and advance through described inclined surface.

2. equipment as claimed in claim 1, wherein said depression extends to opposite side from a side of described inclined surface basically.

3. equipment as claimed in claim 1 or 2, wherein said depression is on described inclined surface, equipment vertically on one of the depression of a plurality of described horizontal expansions of separating.

4. equipment as claimed in claim 3, wherein whole described inclined surface comprises the depression of described horizontal expansion basically.

5. equipment according to claim 3, wherein each is recessed to form in the picking up between the horizontal upstanding wall on part of equipment, and described inclined surface is formed at this and picks up on part.

6. equipment as claimed in claim 5, wherein the rear portion of each depression is formed by the first upright front surface of the corresponding described wall of arranging backward and the front portion of each depression is formed by the upright rear surface of the corresponding described wall of layout forward.

7. equipment as claimed in claim 6, wherein each wall has corresponding the described first upright front surface and second surface accordingly.

8. equipment as claimed in claim 7, wherein the first upright front surface backward in succession of this equipment is from less gradient to changing than the big-inclination increment.

9. equipment as claimed in claim 7, wherein from spill to convex, the ground increment changes the first upright front surface backward in succession of this equipment.

10. equipment as claimed in claim 7, wherein described first of each described wall the upright front surface and described second surface meet at least substantially at the place, summit of this wall.

11. equipment as claimed in claim 10, the summit of wherein said wall is with arranged in linear arrays.

12. equipment as claimed in claim 7, the base portion of wherein said wall is with arranged in linear arrays.

13. equipment as claimed in claim 10, wherein said depression is identical cross-sectional form basically.

14. equipment as claimed in claim 10, the described summit of wherein said wall is arranged on curved arrays.

15. equipment as claimed in claim 8, the base portion of wherein said wall is arranged on crooked array.

16. equipment as claimed in claim 12, wherein said array is substantially parallel.

17. equipment as claimed in claim 14, wherein said array is substantially parallel.

18. equipment as claimed in claim 1 or 2, this equipment front portion place surperficial in described collection has the other depression of horizontal expansion, the other concave arrangement of this horizontal expansion becomes thus in the use of equipment, from described inclined surface move to backward at least a portion of collecting surperficial fragment by moving to this other depression, be trapped in this other depression and therefore from this, other depression moves to and collects surface and advance.

19. equipment as claimed in claim 18, wherein said other depression be equipment vertically on one of a plurality of other depression that separates.

20. equipment as claimed in claim 18, depression wherein said or that each is other is defined between the other upright transverse wall of equipment.

21. equipment as claimed in claim 20, wherein said other upright transverse wall extends to opposite side from equipment one side basically.

22. equipment as claimed in claim 18, in wherein said or each depression and described or the scope that is recessed in the 5-25 millimeters deep that each is other.

23. equipment as claimed in claim 1 or 2, wherein roughly flat-shaped flexible member limits its in use section in the opening back, under the state that the surface of this section is used at equipment in topmost and form and collect surface.

24. equipment as claimed in claim 23, wherein this section has the downside that formed by submissive material so that, in the use of equipment, described downside can conform to partly with the fluctuating in ground.

25. equipment as claimed in claim 24, wherein said section is formed by the flexible layer with the bristle that dangles.

26. equipment as claimed in claim 5, last described wall on wherein said inclined surface forms baffle plate, this baffle plate is positioned to thus in use, the fragment that is upward through opening makes progress through baffle plate and then moves downward to collecting surface, when equipment moves forward on the ground, in the situation that slow down, described baffle plate hinders at least in part to collect and lip-deeply is collected the fragment motion and turns back in opening.